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My truck has started this weird thing: when you hit the brakes, even slightly at slow speed while turning the wheel, there is a loud chirp (almost a "bark") and you can feel feedback in the wheel. Truck stops straight from high speed, no pulling from one side or the other. Any ideas? Could it be in the steering gear? Thanks in advance.
The noise is not coming from the brakes or wheels. It sounds almost like the brake rod that attaches to the pedal is rubbing or binding somehow. I can also feel a reaction in the steering wheel when I pump the brakes even while sitting still. It almost feels like the pump is putting fluid to the steering sector when the brakes are applied, but it's only momentary.
I'm not familiar enough with our hydraulic systems to state this, but in the early 80s IH 1400 series combines had a problem with an orfice in flow control system. It made the steering jerky when other hydraulic apps were applied.
I'm not sure if our system has any kind of priority control or not.
IDK about a priority control Larry, but I can sit still in a parking lot and turn the wheel slightly left or right (doesn't matter which way) and punch the brakes and the steering wheel will react momentarily. I was hoping somebody was gonna have some insight into this one.
I'm with you on not letting the dealership monkey with my truck. Not talking panic stop. It's really more pronounced at low speed light pedal situations. My 01 F450 does not and never has done this. The chirp or bark is loud, in the cab and not in any way associated with wheel or rotor issues. It's like the brake cylinder or rod is rubbing or somehow binding making the noise. IDK.
I'm having the same issue. When I'm driving at any speed, I can feel a slight bump in the steering wheel when I touch the brakes. I am being told that that is a vacuum pump that operates both steering and brakes. The Ford dealership can't even seem to feel it.
Can this cause a loss of steering or braking? I'm about to go on a 3000 mile trip pulling my 5th wheel.
It's the power steering pump that supplies the "power" for the brakes and steering. My 01 F450 has a similar setup but I don't notice the same feedback thru the wheel. I'll be sure to let y'all know if I get it fixed.
I am being told that that is a vacuum pump that operates both steering and brakes.
Not sure of your truck model, but I know of no steering assist that ever operated on vacuum power. The 6.4 liter and all post 2000 models anyway, had a hydraulic brake booster as well as hydraulic power assist for steering. This power is supplied by a belt driven hydraulic pump on the front of the engine.
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